cmos 4046, 40106, 4066 S&H problems, Hellllp!

spacesynth · Joined: Jul 11, 2023 Posts: 3 Location: England

Hiya, I have laid out some cmos ic's to create a S&H using a 4046, 40106 and a 4066 (Switch) I copied the schematic from https://hackaday.com/.../logic-noise-4046-voltage.../ but the sample and hold effect does not work sadly. Any ideas if the schematic is correct, or if you know of a different workaround. Any help will be much appreciated, many thanks. I have attached a jpeg of the schematic.[img][/img]

blue hell · Posted: Sat Sep 02, 2023 7:19 am Post subject:

Ehmm . right .. the URL given does not work and there is no attached image ... apart from that that ...

What do you expect from the circuit and in what way is it not doing what you want it to do?

PHOBoS · Posted: Sun Sep 03, 2023 12:12 pm Post subject:

I assume this is the link: https://hackaday.com/2015/08/07/logic-noise-4046-voltage-controlled-oscillator-part-one/

and this is the image:
Posted Image, might have been reduced in size. Click Image to view fullscreen.

Posted Image, might have been reduced in size. Click Image to view fullscreen.

The circuit confused me a bit btw until I realized it's drawn somewhat right to left, then it makes sense.

apart from that I agree with